1310223931 has 2 divisors, whose sum is σ = 1310223932. Its totient is φ = 1310223930.

The previous prime is 1310223923. The next prime is 1310223997. The reversal of 1310223931 is 1393220131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1310223931 - 2³ = 1310223923 is a prime.

It is a super-2 number, since 2×1310223931² = 3433373498730185522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1310223896 and 1310223905.

It is not a weakly prime, because it can be changed into another prime (1310223731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655111965 + 655111966.

It is an arithmetic number, because the mean of its divisors is an integer number (655111966).

Almost surely, 2^1310223931 is an apocalyptic number.

1310223931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310223931 is an equidigital number, since it uses as much as digits as its factorization.

1310223931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 1310223931 is about 36197.0154985187. The cubic root of 1310223931 is about 1094.2465243147.

The spelling of 1310223931 in words is "one billion, three hundred ten million, two hundred twenty-three thousand, nine hundred thirty-one".